Bench-plane



PATENTED JAN. 19,1904;

, B. 0. SJOLANDER.

BENCH PLANE.

APPLICATION r1321) JUNE 11, 1903,,

2 SHEETS-SHEET 1.

N0 MODEL.

PATENTED JAN. 19, 1904.

E. 0. SJOLANDER.

BENGH'PLANE.

APPLICATION rum) mun 11, 1903.

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H0 MODEL.

Eric

Wiigzsszs filaa m UNITED. STATES Patented January 19, 1 904.

PATENT OFFICE.

ERIC 0. SJ OLANDER, OF DEEPWATER, TEXAS.

BENCH-PLANE.

SPECIFICATION forming part of Letters Patent No. 749,827, dated January19, 1904.

Application filed June 11, 1908. Serial No. 161,054. (No model.)

To all-whom it may concern:

Be it known that 1, ERIC 0. SJOLANDER, a citizen of the United States,residing at Deepwater, in the county of Harris and State of Texas, haveinvented a new and useful Bench- Plane, of which the following is aspecification.

This invention relates generally to benchplanes, and more especially tomeans for adjusting the bit in the stock and means for securing the bitin adjusted position.

.One object of the invention is to provide in a bench-plane an improvedform of mechanism for adjusting the position of the bit in the stock, sothat the depth of cut may be accurately adjusted and so that the edge ofthe bit may be brought into perfect parallelism with the face of thestock.

A further object of the invention is to provide in a bench-plane a bitbearing a scale and a bit-clamping plate bearing an indicator tocooperate with the scale on the bit to show when the bit and theclamping-plate have been brought into proper relation.

A further object of the invention is to provide in a bench-plane singlemeans for adjusting the depth of the cut and for swinging the bitlaterally on a suitable fulcrum to bring the cutting edge intoparallelism with the stock.

In attaining the objects above stated and others which will hereinafterappearI make use of the construction and combination of parts of abench-plane hereinafter described and claimed, and illustrated in theaccompanying drawings, in which corresponding parts are designated bythe same characters of reference throughout, it being understood thatchanges in the form, proportions, and exact mode of assemblage of theelements may be made without departing from the spirit of the invention.

In the drawings, Figure 1 is aview in vertical longitudinal sectionthrough the plane. Fig. 2 is a view of the plane-stock and bit-support.Fig. 3 is a view in perspective of the bit-clamping plate, showing therecessed back. Fig. 1 is a perspective view, of the adjusting screw andblock. Fig. 5 is a plan view of the bit and the bit-clamping plate,showing the clamping-plate adjusted in position by means of the scale onthe bit.

Referring to the drawings in detail, 1 designates the plane-stock, whichmay be of wood or metal and of any of the ordinary forms. The stock isprovided. with the usual opening 2 for the passage of the bit, and onthe upper surface of the stock, at the rear margin of the opening 2, isprovided a supporting structure 3, the forward surface of which forms acontinuation of the rear wall of the opening 2. The bit 4 consists,preferably, of a single plate of steel provided at its lower end with acutting edge and having at 5 a slot with enlarged and rounded ends forthe passage of the head of a screw 6, mounted in the lower end of thesupporting structure. The width of the slot 5 between the rounded endportions is of such Width as just to permit of the passage of the shankof the screw 6, which is designed to serve as a fulcrum, upon which thebit 4: may be swung laterally. The bit is provided near the butt withround openings 7 for purposes that will presently appear, and along onelateral margin of the bit is formed a scale 8, for use in connectionwith an indicator formed on the bit-clamping plate.

The supporting structure 3 is vertically slotted at 9 from the upper endalmost to the base, and at the lower end of the slot 9, which tapersslightly toward the bottom, are. provided a pair of oppositely-disposedribs 10, which lie in a plane substantially at right angles with thefront surface of the support. At either side of the slot 9 is an arm 11,on the forward surface of each of which is formed a shallow recess 12 toform a way for the movement laterally and transversely of the support ofone of the wings 14 of a block 13, which is carried on the screw 15,which is supported in the slot 9 in a manner presently to be explained.

The body portion of the block 13 issufliciently narrow to be susceptibleof considerable lateral movement in the slot 9, and the wings 14 are ofsuch proportions that they will have a similar degree of lateralmovement in the recesses 12. On the forward surface of the block 13,which lies substantially flush with the forward surface of thesupporting structure 3, is provided a stud 16, which is adapted forengagement with either of the round openings 7 in the plane-bit. Whenthe parts of the plane are assembled, the stud 16 will always be-broughtinto engagement with one of the openings 7 and when the parts are soconnected the movements of the block 13 will be communicated to the bit,and conseqently any shifting of the block 13 will change the position ofthe bit correspondingly.

The screw 15, upon which the block 13 is carried, is provided at itsupper end with a head 17 of suitable form to facilitate the rotation ofthe screw, and at the lower end the screw has a reduced portion which isnot threaded. At the extremity of the reduced portion a collar 18 isrigidly attached, and loose upon the reduced portion between the collar18 and the threaded portion of the 'screw is a second collar 19. Theopposite faces of both collars 18 and 19 are rounded, as best seen inFig. 1, and when the collars are spread apart sufficient space isprovided between them to permit the passage of the ribs 10, which arespaced apart sufliciently to allow the reduced portion of the screwto'beintroduced between them. The rounded faces of the collars 18 and 19permit the screw 15 to be shifted laterally with the reduced portionbetween the ribs as a pivotal point.

' In order to clamp the bit 1 rigidly in proper relation to the stock 1,I provide a bit-clamping plate 20 of the form generally used, which isprovided about midway of its length with a slot 21, having the lower endthereof enlarged and rounded to permit the passage of the head of thescrew 6. At the upper end of the bit-clamping plate a cam-lever 22 ispivotally mounted in a slot 23 in the clamping-plate, and on the rearsurface of the clamping-plate, which is preferably recessed, as shown inFig. 3, there is provided near the upper end of the plate a tongue 24,of thin metal, which is rigidly attached at its lower end to theclamping-plate and has the upper end thereof, which is free, disposedunder the 'cam on lever 22. The tongue 24 is provided to prevent thecontact of the cam with the bit I, as the contact of the cam with thebit would tend to throw the bit out of adjusted position.

On the side of the clamping-plate 20 which corresponds in position tothe scale 8 on the bit there is formed a shoulder 26, which is adaptedto serve as an indicator in connection with said scale and to show bythe coincidence of the shoulder with one of the divisions of the scalewhen the clamping-plate has been brought into proper relation to thebit.

In assembling the parts of the plane for use the mode of procedure is asfollows: The clamping-plate 20 and the bit 4 will first be brought intoproper relation, as shown in Fig. 5, and the division of the scale withwhich the shoulder on the clamping-plate coincides will be noted. Thebit will then be introduced into the opening in the stock, and the stud16 on the block 13 will be brought into engagement with one of theopenings 7 in the bit. If the bit is new and unworn, the lower openingwill be employed, and if the bit is old and much worn the upper openingwill be used. The bit having been operatively connected with the block13, the screw will be rotated by means of the head 17 on the end thereofuntil the edge of the plane-bit has been protruded beyond the face ofthe stock to the distance required for the proper depth of cut. Then thescrew 15 will be swung laterally, if necessary, to bring the edge of thebit into perfect parallelism with the face of the stock. During theadjustment the operator will hold the plane in such position that therelation of the edge of the bit with the face of the stock may beaccurately observed. WVhen the bit has been properly adjusted, theclamping-plate will be placed in position on the forward surface of thebit, with the screw 6 extending through the opening 21 in the plate. Theclamping-plate will then be brought into exact position in relation tothe bit by causing the shoulder 25 to coincide with the division of thescale 8, previously noted, and the camlever 22 will then be operated tosecure the clamping-plate in adjusted position.

From the foregoing description of the construction and mode ofadjustment of the plane it will be seen that the adjustment of the bitin relation to the plane-stock is effected independently of theadjustment of the clampingplate and that the relative positions of theclamping-plate and bit to produce the desired result having been notedat the beginning of the operation of adjustment of parts of the planethe clamping-plate may be brought at once into proper relation to thebit and secured without deranging the adjustment of the bit in relationto the stock. It will also have been observed that by providing a scaleon the bit and an indicator of a suitable form on the clamping-plate adegree of accuracy of adjustment of the clamping-plate and bit may besecured, which is impossible in planes not so constructed.

A special advantage inherent in the construction hereinbefore describedis in the mode of supporting the screw 15 and the adjustingblock 13, bywhich it is made possible to effect the adjustment, of the plane-bit asto depth of cut and as to parallelism with the face of the stock by asingle adjusting means.

Having thus described the construction and operation of my invention,what I claim as new, and desire to secure by Letters Patent, 1s

1. In a bench-plane, the combination of a bit bearing a scale locatedabove the mouth of the plane, and a bit-clamping member having anindicator adapted to cooperate with said scale.

2. In a bench-plane,.the combination of a bit bearing a scale above themouth of the plane, and a clamping member having a shoulder adapted toform an indicator for cooperation with said scale.

3. In a bench-plane, the combination of a bit having a scale locatedalong one lateral margin thereof above the mouth of the plane, and aclamping member having an indicator adapted to cooperate with saidscale.

4:. In a bench-plane, the combination of a bit, a support for the bithaving a slot within its supporting range, a block supported in saidslot and susceptible of movement longitudinally and laterally therein,said block being adapted for positive connection with the bit, and apivoted member mounted within said slot along which said block islongitudinally movable.

5. In a bench-plane, the combination of a bit, a block adapted forpositive connection with said bit, and a screw upon which said block issupported, said screw being pivotally mounted to swing laterally.

6. In a bench-plane, the combination of a bit, a bit-support having alongitudinally-arranged slot, oppositely-disposed ribs provided at oneend of the slot, a screw arranged in said slot having collars near oneend for loose engagement with said ribs and a block mounted on saidscrew and adapted for lateral and longitudinal movement in said slot andalso adapted for positive connection with said bit.

7 In a bench-plane, the combination of a bit, a bit-support having alongitudinally-disposed slot, oppositely-disposed ribs at the lower endof said slot, a screw arranged in said slot and having at the lower endcollars spaced apart and having the opposite faces rounded forengagement with said ribs, and a block mounted on said screw and adaptedfor positive connection with said bit.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

ERIC 0. SJ OLANDER. Witnesses:

J. H. Jocnmyr, Jr., J. Ross COLHOUN.

